On the same subject of the RJ11 cables I have recently gone to FTTC and BT installed the Modem within half a metre of the master socket but used a 5m flat cable so I was looking for a shorter twisted pair cable to cut down on the risk of interference.
The BT cable is pin for pin. ie pin 3 to pin 3. All the replacements I have seen are crossover ie pin 2 to pin 3 does this matter?
PlusNet 80 / 20 FTTC from 6thJan15.
TBB - 73Mbps down 18.5 Mbps up.